What is hack sesh?

Hack Sesh: N:

1. When young, or semi-young human-beings gather in a circle in relatively dry location and kick a small baggie of sand, (or in some cases cheap beads) around the circle using their body's, but no arms or hands;

2. When young human-beings gather anywhere, anytime, and smoke some dank kush casusing them to "hack" up a lung;